SDSS J125733.63+542850.5 spectrum
收藏B2FIND2026-03-19 收录
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https://b2find.eudat.eu/dataset/9936a80f-0cc4-556e-9d36-817ed7d0a838
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资源简介：
The white dwarf (WD) binary SDSS J1257+5428 comprises an extremely low-mass WD with a mass of 0.1-0.24M_{sun} and a more massive companion of ~1M{sun} that is more than 0.6Gyr...
